Power frequency withstand voltage detection device and method for vacuum arc-extinguishing chamber

Abstract

The invention discloses a power frequency withstand voltage detection device and method for a vacuum arc-extinguishing chamber, and the power frequency withstand voltage detection device comprises a control switch, a voltage stabilizer, a voltage regulator, a transformer, a current transformer, an overcurrent relay, and a time-delay relay. The control switch is respectively connected with the power frequency power supply and the voltage stabilizer; the voltage stabilizer is connected with the voltage regulator, the voltage regulator is connected with the transformer, and the transformer is connected with the vacuum arc-extinguishing chamber. The time-delay relay is used for prolonging a set time threshold value and then is connected with the control switch and the voltage stabilizer; the current transformer is connected in series between the voltage regulator and the transformer; the overcurrent relay detects whether the first current of the loop where the current transformer is located exceeds a set current threshold value or not; and when the first current exceeds a set current threshold, the time-delay relay is controlled to disconnect the control switch and the input end of thevoltage stabilizer. According to the technical scheme provided by the invention, the problem of large difference in power frequency withstand voltage detection of the vacuum arc-extinguishing chamberis solved.

Description

technical field [0001] The invention relates to the technical field of vacuum electronic devices, in particular to a power frequency withstand voltage detection device and method of a vacuum interrupter. Background technique [0002] One of the finished performances of vacuum electronic devices such as vacuum interrupters is the power frequency withstand voltage, which is a rigid indicator of whether the product is handed over and accepted, especially with the application of a sealing process in the vacuum device manufacturing line, The power frequency withstand voltage index is the own performance of each product. [0003] The existing technology is to burn out the original tip burrs through multiple discharges through the aging process, and gradually increase the power frequency withstand voltage of the vacuum electronic device. For general vacuum electronic devices, the burn-in voltage in the above aging process is the working voltage of vacuum electronic devices, but th...

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Problems solved by technology

[0005] The embodiment of the present invention provides a power frequency withstand voltage detection device and method of a vacuum interrupter to solve the problem of large differences in power frequency withstand voltage detection of a vacuum interrupter

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